Sep 21 03:58:51.398 INFO checking rust-sort-0.1.4 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 03:58:51.398 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 03:58:51.398 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-7/master#f7f4c500b46603386e940f116b469c7adc043a6d:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 03:58:51.644 INFO blam! 8dd36d7b7fb38320162ae423bfc6fbdea7518bd0016b2adf4f16c42da98d9a6f
Sep 21 03:58:51.646 INFO running `"docker" "start" "-a" "8dd36d7b7fb38320162ae423bfc6fbdea7518bd0016b2adf4f16c42da98d9a6f"`
Sep 21 03:58:52.433 INFO kablam! usermod: no changes
Sep 21 03:58:52.464 INFO kablam!     Checking commandext v0.1.0
Sep 21 03:58:52.464 INFO kablam!     Checking rust-sort v0.1.4 (/source)
Sep 21 03:58:52.678 INFO kablam!     Checking utils v0.0.1
Sep 21 03:58:52.791 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 21 03:58:52.791 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:83:3
Sep 21 03:58:52.791 INFO kablam!    |
Sep 21 03:58:52.791 INFO kablam! 83 | #[experimental]
Sep 21 03:58:52.791 INFO kablam!    |   ^^^^^^^^^^^^
Sep 21 03:58:52.791 INFO kablam!    |
Sep 21 03:58:52.791 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 21 03:58:52.791 INFO kablam! 
Sep 21 03:58:52.791 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 21 03:58:52.791 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:77:3
Sep 21 03:58:52.791 INFO kablam!    |
Sep 21 03:58:52.791 INFO kablam! 77 | #[experimental]
Sep 21 03:58:52.791 INFO kablam!    |   ^^^^^^^^^^^^
Sep 21 03:58:52.791 INFO kablam!    |
Sep 21 03:58:52.791 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 21 03:58:52.791 INFO kablam! 
Sep 21 03:58:52.791 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 21 03:58:52.791 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:37:3
Sep 21 03:58:52.791 INFO kablam!    |
Sep 21 03:58:52.791 INFO kablam! 37 | #[experimental]
Sep 21 03:58:52.791 INFO kablam!    |   ^^^^^^^^^^^^
Sep 21 03:58:52.791 INFO kablam!    |
Sep 21 03:58:52.791 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 21 03:58:52.791 INFO kablam! 
Sep 21 03:58:52.792 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 21 03:58:52.792 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:29:3
Sep 21 03:58:52.792 INFO kablam!    |
Sep 21 03:58:52.792 INFO kablam! 29 | #[experimental]
Sep 21 03:58:52.792 INFO kablam!    |   ^^^^^^^^^^^^
Sep 21 03:58:52.792 INFO kablam!    |
Sep 21 03:58:52.792 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 21 03:58:52.792 INFO kablam! 
Sep 21 03:58:52.792 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 21 03:58:52.792 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/lib.rs:13:3
Sep 21 03:58:52.792 INFO kablam!    |
Sep 21 03:58:52.792 INFO kablam! 13 | #[experimental]
Sep 21 03:58:52.792 INFO kablam!    |   ^^^^^^^^^^^^
Sep 21 03:58:52.792 INFO kablam!    |
Sep 21 03:58:52.792 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 21 03:58:52.792 INFO kablam! 
Sep 21 03:58:52.792 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 21 03:58:52.792 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:63:3
Sep 21 03:58:52.792 INFO kablam!    |
Sep 21 03:58:52.792 INFO kablam! 63 | #[experimental]
Sep 21 03:58:52.792 INFO kablam!    |   ^^^^^^^^^^^^
Sep 21 03:58:52.792 INFO kablam!    |
Sep 21 03:58:52.792 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 21 03:58:52.792 INFO kablam! 
Sep 21 03:58:52.792 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 21 03:58:52.792 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:45:3
Sep 21 03:58:52.792 INFO kablam!    |
Sep 21 03:58:52.792 INFO kablam! 45 | #[experimental]
Sep 21 03:58:52.792 INFO kablam!    |   ^^^^^^^^^^^^
Sep 21 03:58:52.792 INFO kablam!    |
Sep 21 03:58:52.792 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 21 03:58:52.792 INFO kablam! 
Sep 21 03:58:52.792 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 21 03:58:52.792 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:37:3
Sep 21 03:58:52.792 INFO kablam!    |
Sep 21 03:58:52.792 INFO kablam! 37 | #[experimental]
Sep 21 03:58:52.792 INFO kablam!    |   ^^^^^^^^^^^^
Sep 21 03:58:52.792 INFO kablam!    |
Sep 21 03:58:52.792 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 21 03:58:52.792 INFO kablam! 
Sep 21 03:58:52.792 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 21 03:58:52.792 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:29:3
Sep 21 03:58:52.792 INFO kablam!    |
Sep 21 03:58:52.792 INFO kablam! 29 | #[experimental]
Sep 21 03:58:52.792 INFO kablam!    |   ^^^^^^^^^^^^
Sep 21 03:58:52.792 INFO kablam!    |
Sep 21 03:58:52.792 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 21 03:58:52.793 INFO kablam! 
Sep 21 03:58:52.793 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 21 03:58:52.793 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:21:3
Sep 21 03:58:52.793 INFO kablam!    |
Sep 21 03:58:52.793 INFO kablam! 21 | #[experimental]
Sep 21 03:58:52.793 INFO kablam!    |   ^^^^^^^^^^^^
Sep 21 03:58:52.793 INFO kablam!    |
Sep 21 03:58:52.793 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 21 03:58:52.793 INFO kablam! 
Sep 21 03:58:52.793 INFO kablam! error[E0658]: The attribute `experimental` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 21 03:58:52.793 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/utils-0.0.1/src/empty.rs:14:3
Sep 21 03:58:52.793 INFO kablam!    |
Sep 21 03:58:52.793 INFO kablam! 14 | #[experimental]
Sep 21 03:58:52.793 INFO kablam!    |   ^^^^^^^^^^^^
Sep 21 03:58:52.793 INFO kablam!    |
Sep 21 03:58:52.793 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 21 03:58:52.793 INFO kablam! 
Sep 21 03:58:52.793 INFO kablam! error: aborting due to 11 previous errors
Sep 21 03:58:52.793 INFO kablam! 
Sep 21 03:58:52.793 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 21 03:58:52.796 INFO kablam! error: Could not compile `utils`.
Sep 21 03:58:52.796 INFO kablam! 
Sep 21 03:58:52.796 INFO kablam! To learn more, run the command again with --verbose.
Sep 21 03:58:52.797 INFO kablam! su: No module specific data is present
Sep 21 03:58:53.343 INFO running `"docker" "rm" "-f" "8dd36d7b7fb38320162ae423bfc6fbdea7518bd0016b2adf4f16c42da98d9a6f"`
Sep 21 03:58:53.425 INFO blam! 8dd36d7b7fb38320162ae423bfc6fbdea7518bd0016b2adf4f16c42da98d9a6f